---
name: tailwindcss-48d89dcd44b6
description: Expert Tailwind CSS assistance covering utility classes, responsive variants, arbitrary values, and configuration. Use when styling modern web applications with speed and consistency.
---

# Tailwind CSS

Tailwind CSS is an efficient, utility-first CSS framework providing direct composition of modern responsive layouts with lightning-fast compilation.

## When to Use

- **Modern Utility-First Web Design**: Rapidly styling HTML without leaving JSX/HTML templates.
- **Tailwind CSS v4 CSS-First Projects**: Streamlined setup using `@theme` and native CSS engine without JavaScript config files.
- **Responsive & Dark-Mode Interfaces**: Instant responsive breakpoint variants (`md:`, `lg:`) and dark mode (`dark:`).
- **Design System Consistency**: Enforcing standardized spacing scales, typography, and color tokens.

## Quick Start

```html
<div
  class="max-w-md mx-auto bg-white rounded-xl shadow-md overflow-hidden md:max-w-2xl m-8"
>
  <div class="md:flex">
    <div class="p-8">
      <div
        class="uppercase tracking-wide text-sm text-indigo-500 font-semibold"
      >
        Tailwind CSS
      </div>
      <p class="mt-2 text-slate-500">
        Utility-first CSS framework packed with classes.
      </p>
      <button
        class="mt-4 px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 transition"
      >
        Action
      </button>
    </div>
  </div>
</div>
```

## Core Concepts

### Tailwind CSS v4 CSS-First Configuration

Configuring design tokens directly in native CSS with `@theme`:

```css
/* main.css */
@import "tailwindcss";

@theme {
  --color-brand-primary: #4f46e5;
  --color-brand-accent: #06b6d4;
  --font-display: "Outfit", sans-serif;
  --radius-custom: 1rem;
}
```

### Responsive, Accessible Card Layout

Combining flexbox, grid, hover states, and dark mode variants:

```html
<div
  class="max-w-md mx-auto p-6 bg-white dark:bg-slate-900 rounded-2xl shadow-lg border border-slate-100 dark:border-slate-800 transition hover:shadow-xl"
>
  <div class="flex items-center space-x-4">
    <div
      class="flex-shrink-0 w-12 h-12 bg-indigo-100 dark:bg-indigo-950 text-indigo-600 dark:text-indigo-400 rounded-xl flex items-center justify-center font-bold text-lg"
    >
      TS
    </div>
    <div>
      <h3 class="text-lg font-semibold text-slate-900 dark:text-white">
        Enterprise Scalability
      </h3>
      <p class="text-sm text-slate-500 dark:text-slate-400">
        Tailwind CSS v4 Engine
      </p>
    </div>
  </div>
  <p class="mt-4 text-sm leading-relaxed text-slate-600 dark:text-slate-300">
    Ultra-fast build performance with zero config file ceremony.
  </p>
  <button
    class="mt-6 w-full py-2.5 px-4 bg-indigo-600 hover:bg-indigo-700 active:bg-indigo-800 text-white font-medium text-sm rounded-lg transition focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2"
  >
    View Architecture
  </button>
</div>
```

### Container Queries & Modern Micro-Animations

Adapting component appearance to container dimensions:

```html
<!-- Container query parent and child -->
<div class="@container">
  <div class="flex flex-col @sm:flex-row items-center gap-4 p-4">
    <span class="w-full @sm:w-auto text-center font-medium"
      >Responsive inside container</span
    >
  </div>
</div>
```

## Common Patterns

### Dynamic Class Composition with cn Utility (clsx + tailwind-merge)

**Problem**: Conditional string concatenation produces conflicting Tailwind classes (e.g. `p-4` and `p-8`).

**Solution**:
Use the `cn()` helper:

```typescript
import { clsx, type ClassValue } from "clsx";
import { twMerge } from "tailwind-merge";

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

// In component:
// cn("px-4 py-2 bg-blue-500", isPrimary && "bg-indigo-600", className);
```

## Best Practices

**Do**:

- Target Tailwind CSS v4 with native CSS `@theme` variables for lightning-fast compilation.
- Use `clsx` and `tailwind-merge` (`cn()`) when dynamically constructing conditional class strings.
- Design mobile-first: use unprefixed utilities for mobile, and override with `md:`, `lg:` prefixes.
- Leverage container queries (`@container`) for modular UI components embedded in arbitrary layouts.

**Don't**:

- Write arbitrary values (`w-[347px]`) when standardized design scale values exist.
- Overuse `@apply` in CSS files; it re-introduces CSS naming overhead and defeats utility advantages.
- Concatenate partial dynamic classes (e.g. `text-${color}-500`); always use complete string literals.

## Troubleshooting

| Error                                                      | Cause                                                               | Solution                                                                  |
| :--------------------------------------------------------- | :------------------------------------------------------------------ | :------------------------------------------------------------------------ |
| `Tailwind classes not rendering in browser`                | Class not included in `content` purge glob in `tailwind.config.js`. | Verify file paths in `tailwind.config.js` `content` array.                |
| `Dynamic class strings like text-${color}-500 not working` | Tailwind scanner cannot evaluate dynamic string interpolation.      | Use complete class names in lookup maps: `{ red: 'text-red-500' }`.       |
| `Custom CSS directive @tailwind unknown at-rule`           | Editor CSS linter not configured for PostCSS/Tailwind.              | Install Tailwind CSS IntelliSense extension or set CSS validate to false. |

## References

- [Tailwind CSS Documentation](https://tailwindcss.com/)


---
Source attribution: G1Joshi
Original project: https://github.com/G1Joshi/Agent-Skills/blob/6a74cf03a8a86dc7d993ead3091b41123dbd0181/skills/frameworks/tailwindcss/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2026 G1Joshi

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: G1Joshi
Original project: https://github.com/G1Joshi/Agent-Skills/blob/6a74cf03a8a86dc7d993ead3091b41123dbd0181/skills/frameworks/tailwindcss/SKILL.md
Attribution basis: Source repository record

Fields of work: Design, Development & Engineering
Roles: Frontend Developer, Product Designer, UX Designer
Specialties: Cross Platform, Frontend
Tools: Tailwind Css
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: bcc2291de969197865f690a7337e2fad21e17157a36235c14f89ff4947e7415e